On his WABC Radio show Sunday night, Klein called for a federal devil worshiper watch list while advocating that the government monitor “radical domestic devil worshiping clans.”

Klein said he was responding to a report that Lanza worshiped the devil and had an online page dedicated to Satan, according to former classmate Trevor L. Todd.

Lanza’s worshiping page had the word “Devil” written in red, Gothic-style letters against a black background, stated Todd, the London Daily Mail reported.

The theme of so-called devil worship and Satanic-style “Goth” subculture, Klein explained on his show, has cropped up in numerous other killings.

“Lanza smashed his computer,” Klein stated. “Clearly he is hiding something in his digital footprint. Was he a part of any larger Satanic or ritualistic subculture locally or online where he could have revealed his plans or could have even received support or encouragement in preparing for the killings?

“It’s established fact,” Klein continued, “that in the U.S. there have been numerous murders tied to radical devil worshiping sects and that some sects previously advocated for human sacrifice. We need to probe whether Lanza was tied to any. Maybe he wasn’t but these questions should at least should be asked.”

Klein maintained that if Lanza had been a Muslim “we all know the discussion we’d be having right now would not focus on gun rights, psychological illness, drugs or violent video games.”

“We’d automatically be asking whether any Muslim killer was indoctrinated in a mosque or an online forum; whether he was motivated by radical Islam; whether he was tied to a terror group; whether he had any accomplices. We’d ask this the minute we found out the killer is Muslim.”

Continued Klein: “Perhaps we should ask similar questions about Lanza given that there are radical sects within Satanism, some that may believe in human sacrifice.”

Klein maintained he was not suggesting all or most devil worshipers believed in violent ideology or human sacrifice.

“I couldn’t care less whether people worship the devil or a peacock as long as they are not hurting anyone,” Klein told WND today.

“Perhaps the vast majority of devil worshipers don’t believe in blood rituals or human sacrifice, but since there are reportedly some that do, shouldn’t we see that as a potential future threat?”

Klein further advocated a “radical devil worshiping watch list of individuals who are a part of any violent subculture that believes in human sacrifice.”

“I say infiltrate the chat rooms, infiltrate the different Satanic sects the same way we do for radical Islam.”

The theme of so-called devil worship and Satanic-style “Goth” subculture has cropped up in numerous other mass shootings, although in some cases the phenomenon may have been under-reported or entirely unreported.

There have been a slew of murders in the U.S. reportedly tied to devil worship.

There is the case of the 1980s serial killer Ricardo “Richard” Ramirez who was dubbed the “Night Stalker” by the news media. Many of his victims were killed in ritualistic style and had various Satanic markings carved into their bodies.

In one case, in which Tamirez attempted a rape, he used lipstick to draw pentagrams on the victim’s thigh and on the wall in her bedroom.

In another case, Ramirez shot California man Bill Carns in the head and raped his fiancée, Inez Erickson, who later said he demanded she swear her love for Satan.

Also there is Sean Richard Sellers, one of 22 killers to be executed for a crime committed while under the age of 18 since the death penalty was reinstated. His case drew worldwide attention due to his age and his claim that “demonic possession” made him innocent of his crimes.

Sellers had said he was a practicing Satanist. Court documents show he claimed to have read “The Satanic Bible” by Anton LaVey “hundreds of times” during the years he committed his crimes.

In a so-called confession letter written from prison, Sellers related: “I got very involved in Satanism. I truly thought it was an honest way to live, and the rituals of it would enable me to control my life.”

There was also a small-town murder in the Midwest carried out by Jim Hardy, the president of his high school student council, who bludgeoned to death Steven Newberry as part of what Hardy and three other teens claimed was a Satanic ritual.

The teens explained how they formed a Satanic cult and would engage in devil worshiping ceremonies, making up their own rituals taken, in part, from horror movies and heavy metal music.

Perhaps the most infamous shooting spree with Satanic symbolism was carried out by the Manson family.

Charles Manson was found guilty of conspiracy to commit the murders of Sharon Tate and Leno and Rosemary LaBianca carried out by members of his group at his instruction.

Tate, married to film director Roman Polanski, was eight-and-a-half months pregnant when she was murdered in ritualistic style in her home by Manson’s followers in 1969.

The word “pig” – written in Tate’s blood – was reportedly splashed on her front door.

According to reports, Tate was originally selected to play the main character in her husband’s “Rosemary’s Baby,” a film about a pregnant woman who fears that her husband may have made a pact with neighbors to use her child as a human sacrifice in their occult rituals. Actress Mia Farrow ultimately got the role, while Tate did make a brief appearance in the film.

In the immediate aftermath of the 1999 Columbine High School massacre there were widespread reports killers Eric Harris and Dylan Klebold were involved in Goth subculture.

The two had initially been reported to also be members of “The Trenchcoat Mafia,” an informal club within Columbine High School, but later reports emerged that such characterizations were considered incorrect.

The Church of Satan

There are various sects of Satanic culture and devil worship worldwide.

The main established organization promoting the practice in the U.S. is the Church of Satan, which uses LaVey’s “The Satanic Bible” as its guiding book.

The church has five degrees that members can achieve after being inducted through private ceremonies.

The church has a ruling body consisting of the High Priest, the High Priestess and the Council of Nine.

Church of Satan members have over the years made numerous media appearances to refute notions that their doctrine encourages or participates in violence.

Satan represents kindness to those who deserve it instead of love wasted on ingrates.

Satan represents vengeance instead of turning the other cheek.

Satan represents responsibility to the responsible instead of concern for psychic vampires.

Satan represents man as just another animal, sometimes better, more often worse than those that walk on all-fours, who, because of his “divine spiritual and intellectual development”, has become the most vicious animal of all.

Satan represents all of the so-called sins, as they all lead to physical, mental, or emotional gratification.

Satan has been the best friend the Church has ever had, as He has kept it in business all these years.